I have Spier and McKay pants in both the camel and medium grey flannel. I like them a lot. Solid construction and a nice cut. I went with the contemporary, which is pretty slim to me -similar to my Charles Tyrwhitt slim fit pants.
^ I would say you are a medium. The shoulders are good and the body length too. The arms look a little short, but I think that's because you aren't showing any shirt cuff, which I prefer with sweaters.